Farin yashi, farin corundum foda, corundum mai launin ruwan kasa da sauran abubuwan shafe-shafe na yau da kullun, musamman farin corundum foda, wanda shine zaɓi na farko don gogewa da niƙa.Yana da halaye na kristal guda ɗaya, babban taurin kai, kyakkyawan kaifi, da niƙa da aikin gogewa.An yi amfani da fa'idodi kamar fifiko kuma an haɓaka su a cikin masana'antu daban-daban.Don haka, yadda za a zabi lokacin gogewa?
Zaɓin abrasive
Abrasive shine babban jiki wanda ke taka rawa a cikin aikin nika.Yana da alhakin kai tsaye ga aikin yankan kuma shine mahimmancin mahimmanci ga dabaran niƙa don samar da tasirin niƙa.Abrasive dole ne ya zama launin ruwan kasa corundum wanda Xinli ya kera.Kayayyakin sa suna da taurin gaske, juriyar zafi, yanayin zafi da kwanciyar hankali, kuma yakamata ya kasance yana da wani tauri ta yadda zai iya jure wani ƙarfin niƙa.
Ƙa'idar zaɓin abrasive
Lokacin niƙa kayan da ke da ƙarfi mai ƙarfi, yi amfani da abrasives corundum tare da tauri mafi girma.Kayan niƙa tare da ƙarancin ƙarfi don zaɓar ɓarna siliki carbide gaggautsa.
Bugu da ƙari, yin la'akari da ƙarfin ƙarfin kayan aiki, ƙarfin kayan aiki kuma shine babban tushen zaɓi lokacin zabar abrasives.Gabaɗaya magana, taurin abrasive yakamata ya zama sau 2-4 fiye da taurin kayan aikin.In ba haka ba, ƙwayar abrasive tare da ƙananan taurin za a yi sauri da sauri a lokacin yankan sauri kuma ya rasa ikon yankewa, wanda zai sa ƙarfin ƙafafun ya yi ƙasa da ƙasa kuma ya shafi yanke.inganci, kuma ba za a iya tabbatar da ingancin sarrafawa ba.Sabili da haka, mafi girman ƙarfin kayan aiki na kayan aiki, mafi girman taurin abrasive ya kamata ya kasance.
Zaɓin kaddarorin abrasive
Hakanan ya kamata a yi la'akari da yiwuwar halayen sinadarai a cikin tsarin aikin niƙa.A cikin nika lamba yankin, abrasives, binders, workpiece kayan, nika ruwaye da iska ne mai yiwuwa ga maras wata-wata sinadaran halayen karkashin catalytic mataki na nika zafin jiki da kuma nika karfi.Lokacin da aka yi amfani da ƙarfe, ƙurawar ƙura tana da sauri fiye da na corundum abrasive lokacin niƙa karfe.Babban dalilin wannan shine ƙarfin halayen sinadarai tsakanin siliki carbide abrasive da karfe.
Bugu da ƙari, ya kamata a yi la'akari da kwanciyar hankali na thermal na abrasive lokacin da za a zabi wani abu.Lokacin da ake niƙa wasu abubuwa masu wuyar niƙa, wasu hatsarurrukan suna faruwa ne lokacin da yankin niƙa ke da wuyar haifar da yanayin zafi.